This intelligence Perception_active prompted Preventing_or_letting General Prince Friedrich Karl , commander of the Prussian Second Army , to order Arranging at 1900 on 15 August a grossly outnumbered group of 30,000 men of the advanced Cause_to_make_progress III Corps under General Constantin von Alvensleben to cut off Having_or_lacking_access the French line of retreat Escaping at Mars-la-Tour and Vionville .

But the enquiry also found Know the braking power of the train to be grossly inadequate ; the train should have been able to stop Process_end before reaching Arriving the bridge .